package com.itheima.mapper.store;

import org.apache.ibatis.annotations.Select;

import java.util.List;
import java.util.Map;

public interface PieMapper {
    @Select("select sex name ,count(*) value from traveller group by sex")
    List<Map<String, Object>> findSexCount();


    //List<Map<String,Object>> findSexCount();
}
